Modelling of a novel electricity and methanol co-generation using heat recovery and CO2 capture: Comprehensive thermodynamic, economic, and environmental analyses

Hongfei Gu, Jianzi Liu, Xingchen Zhou, Qiwei Wu, Yaodong Liu, Shuaixian Yu, Wenying Qiu and Jianguo Xu

Energy, 2023, vol. 278, issue C

Abstract: The current investigation proposes a novel and efficient co-generation with a methanol production process through a power plant flue gas's captured CO2 in which an alkaline reactor supplies the methanol reactor's input hydrogen. Besides, the compressors, methanol distillation tower, and methanol reactor wasted heat are used as an Organic Rankine Cycle input energy to design a multi-layer wasted heat recovery system. The energy, exergy, economic and environmental approaches are used to assess the plant performance via an Aspen HYSYS code. Accordingly, the total energy and exergy efficiencies are obtained at about 64.13% and 76%. The CO2 capture and methanol separation unit efficiencies are estimated at 42% and 80%. Regarding exergy analysis, the methanol reactor has the highest exergy destruction of about 11302.61kW. The environmental assessment reveals that the total CO2 emission equals 0.9tonCO2/tonMeOH and the Organic Rankine Cycle utilization restricts the indirect emission to the reboilers and distillation columns. Eventually, the total annual cost and total production cost of the proposed scheme are calculated as about 5,638,060dollars and 0.73$/kgMeOH, respectively.

Keywords: Power generation; Methanol production; Thermodynamic analysis; CO2 emission; Performance improvement (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0360544223008757
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:278:y:2023:i:c:s0360544223008757

DOI: 10.1016/j.energy.2023.127481

Access Statistics for this article

Energy is currently edited by Henrik Lund and Mark J. Kaiser

More articles in Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().